Jeon Jungkook, an aspiring neurologist with dreams of an ideal future, is blindsided when someone from his hidden past resurfaces unexpectedly. Unaware of the impending reunion, he finds himself thrust into a whirlwind of events after a chance encounter with ain injured mysterious girl during a snowstorm. Suddenly, his carefully laid plans are disrupted, and he's drawn into a world of spies and danger, facing moral dilemmas and uncertain loyalties. Now, Jungkook must navigate through a maze of secrets and betrayals to protect his sanity and uncover the truth, or risk being destroyed beyond repair. •Spy/undercover agents AU. •Fluff/Angst •Mentions of violence •Top Tae/Bottom Jungkook •Doctor Jungkook/Spy Taehyung